CN2849859Y

CN2849859Y - Portable gas detector

Info

Publication number: CN2849859Y
Application number: CN 200520075734
Authority: CN
Inventors: 刘正怀; 杨同学
Original assignee: Huainan Wei Wei Electrical Appliance Co Ltd
Current assignee: Huainan Wei Wei Electrical Appliance Co Ltd
Priority date: 2005-09-20
Filing date: 2005-09-20
Publication date: 2006-12-20
Anticipated expiration: 2015-09-20

Abstract

The utility model discloses a portable gas detector which is composed of a portable detection transmitting circuit and a data receiving and transfer circuit. A portable instrument part is integrated with gas detection, display, alarm and data transmission, and a receiver part has the functions of local display and data interface with a safe monitoring system substation. The data exchange of movable and static points is realized. The utility model can be used for the real-time detection of underground gas, coal mine safety monitoring systems and other systems needing the wireless data transmission of gas density.

Description

The portable gas explosion pick-up unit

Technical field

The utility model relates to person in electronics, a kind of specifically portable gas explosion pick-up unit.

Background technology

Gas is the No.1 killer who influences mine safety, gas detects and reports to the police and be an important ring that can not be short of in the Coal Production, firedamp sensor is installed and used mode according to it and mainly is divided into fixed firedamp sensor and hand-portable gas detector, they all adopt heat catalytic element that gas is detected, higher sensitivity is all arranged, but also there is following problem: fixedly can intuitively show gas density, and can gas density be passed to ground with safety monitoring system, have characteristics such as warning, output, but be not easy to carry; The portable detector of gas have volume little, can carry, detect, function such as warning, but data can't be passed to coal mine safety monitoring system, data are passed to land station; Can't realize the exchange of sound point data.

The utility model content

The utility model proposes a kind of portable gas explosion pick-up unit at the problems referred to above, integrates the gas detection, shows, reports to the police and counts the line number and pass, and has realized the exchange of sound point data.

The technical solution of the utility model

A kind of portable gas explosion pick-up unit, accepting transfer circuit by portable detection transtation mission circuit and data constitutes, it is characterized in that described portable detection transtation mission circuit adopts the PIC single-chip microcomputer of 16F87X series of 28 pin as host circuit, comprise LED digital display module, Gas Signal input amplification module, the setting key module, register module, alarm output module, wireless sending module, power module, the electric level interface of three of LED digital display module LED seven-segment displaies (the 6th pin) conode behind the serial resistance respectively wherein, be divided into again four the tunnel respectively behind the serial resistances with the I/O mouth the (the 4th of 16F87X pic chip, 6,7,22 pin) connect, be connected with primary side that operational amplifier LM324 sends out circuit big behind the signal output part serial resistance of the sensor of Gas Signal input amplification module, its out secondary is connected with the analog quantity input end (the 3rd pin) of the A/D conversion of 16F87X pic chip, three 74164 registers of register module adopt serial structure, the output terminal of clock of 74164 registers is connected with the current input end of clock (the 14th pin) of the synchronous serial of 16F87X pic chip, data input port (the A of 74164 registers, the B mouth) is connected with the SPI communication data output terminal of 16F87X PIC single-chip microcomputer, the width modulation function end (the 13rd pin) of 16F87X pic chip is respectively through two the triode driven for emitting lights diodes and the hummer of alarm output module, the FPDP of the MIRF002 of wireless sending module (the 8th pin) is connected with vibration input end (the 12nd pin) with the asynchronous communication transmitting terminal (the 17th pin) of 16F87X pic chip by two triodes respectively with control port (the 5th pin), and the 3.6V direct current intrinsic safety electric battery of power module boosts to 5V to each module for power supply by the bl8505 chip adjustment of BOOST structure; Described data are accepted transfer circuit and are adopted 16873 PIC single-chip microcomputer of 28 pin as host circuit, comprise LED digital display module, wireless receiving input amplification module, register module and power module, wherein after three of LED digital display module LED seven-segment display parallel connections, the I/O mouth the (the 2nd of each electric level interface difference resistance in series and 16873PIC chip, 3,4,5,6,7,21,22 pin) connect, the MIRF002 chip of wireless receiving input amplification module is sent out device big by triode and is connected with the communication data input end (the 18th pin) of 16873PIC chip, data input port (the A of the register of register module, the B mouth) is connected with the SPI communication data output terminal of 16873PIC chip, frequency is by the I/O mouth output of 16873PIC chip, and the 12V direct current intrinsic safety electric battery of power module is adjusted to each module for power supply by 7805 chips.

Principle of the present utility model

A) portable instrument gas detects and sends part

The power supply adjustment member is carried out voltage stabilizing with intrinsic safety electric battery 3.6V by precision voltage regulator, uses for CPU and sensor, simultaneously by the DC-DC boosting inverter, becomes and stablizes 5V voltage for the use of wireless data sending unit, to guarantee transmitting range.

Built-in 10 the AD coverters of CPU element be responsible for to be gathered Gas Signal and battery voltage signal through having amplified, and show by 3 LED charactrons.

The user can select displaying contents and realize transducer calibration, alarm parameters setting etc. by function key.

E ²PROM is used to store user's setup parameter.

The wireless transmission unit is responsible for gas density is outwards sent by microwave.And by corresponding receiving trap data are passed to the colliery and pacify this supervisory system substation.

The warning output device has sound and light of alarm, informs that security monitoring personnel gas exceeds standard.

B) wireless data receives and data processing section

Radio receiving unit adopts the monolithic stenode circuit, is used for being responsible for signal and receives amplification, frequency conversion and detection.

The signal of detection output is responsible for handling, showing by CPU, and data conversion is become the required standard frequency 200 ~ 1000HZ output of underground safety monitoring system.

After the safety monitoring system substation collects frequency signal, be responsible for mobile gas checkout equipment signal being delivered to land station by the underground communication circuit.

Effect of the present utility model

1, be easy to carry, data remote can be realized and the safety monitoring system interface.

2, draw current stable circuit advantage on the circuit, increased the long-range low-consumption wireless data transmit-receive of monolithic chip.

3, portable instrument segment set gas detects, shows, reports to the police and count the line number and passes in one.

4, receiver section has local demonstration and carries out the data-interface function with the safety monitoring system substation.

5, realize the exchange of sound point data.

Description of drawings

Fig. 1 portable detection transtation mission circuit structured flowchart of the present utility model.

Fig. 2 data of the present utility model are accepted the transfer circuit structured flowchart.

Fig. 3 data of the present utility model are accepted transfer circuit mounting structure synoptic diagram.

Fig. 4 portable detection transtation mission circuit theory structure synoptic diagram of the present utility model.

Fig. 5 data of the present utility model are accepted transfer circuit theory structure synoptic diagram.

Embodiment

Referring to Fig. 1～5.A kind of portable gas explosion pick-up unit, accepting transfer circuit by portable detection transtation mission circuit and data constitutes, it is characterized in that described portable detection transtation mission circuit adopts the PIC single-chip microcomputer of 16F87X series of 28 pin as host circuit, comprise LED digital display module, Gas Signal input amplification module, the setting key module, register module, alarm output module, wireless sending module, power module, the electric level interface of three of LED digital display module LED seven-segment displaies (the 6th pin) conode behind the serial resistance respectively wherein, be divided into again four the tunnel respectively behind the serial resistances with the I/O mouth the (the 4th of 16F87X pic chip, 6,7,22 pin) connect, be connected with primary side that operational amplifier LM324 sends out circuit big behind the signal output part serial resistance of the sensor of Gas Signal input amplification module, its out secondary is connected with the analog quantity input end (the 3rd pin) of the A/D conversion of 16F87X pic chip, three 74164 registers of register module adopt serial structure, the output terminal of clock of 74164 registers is connected with the current input end of clock (the 14th pin) of the synchronous serial of 16F87X pic chip, data input port (the A of 74164 registers, the B mouth) is connected with the SPI communication data output terminal of 16F87X PIC single-chip microcomputer, the width modulation function end (the 13rd pin) of 16F87X pic chip is respectively through two the triode driven for emitting lights diodes and the hummer of alarm output module, the FPDP of the MIRF002 of wireless sending module (the 8th pin) is connected with vibration input end (the 12nd pin) with the asynchronous communication transmitting terminal (the 17th pin) of 16F87X pic chip by two triodes respectively with control port (the 5th pin), and the 3.6V direct current intrinsic safety electric battery of power module boosts to 5V to each module for power supply by the bl8505 chip adjustment of BOOST structure; Described data are accepted transfer circuit and are adopted 16873 PIC single-chip microcomputer of 28 pin as host circuit, comprise LED digital display module, wireless receiving input amplification module, register module and power module, wherein after three of LED digital display module LED seven-segment display parallel connections, the I/O mouth the (the 2nd of each electric level interface difference resistance in series and 16873PIC chip, 3,45,6,7,21,22 pin) connect, the MIRF002 chip of wireless receiving input amplification module is sent out device big by triode and is connected with the communication data input end (the 18th pin) of 16873PIC chip, data input port (the A of the register of register module, the B mouth) is connected with the SPI communication data output terminal of 16873PIC chip, frequency is by the I/O mouth output of 16873PIC chip, and the 12V direct current intrinsic safety electric battery of power module is adjusted to each module for power supply by 7805 chips.Portable instrument is carried, and before the use, firedamp sensor is carried out the school mark; After the power-on, portable instrument detects gas density automatically, and by wireless to around carry out data transmission; During Gas Signal that the radio receiving unit that distributes when the down-hole is received, in time wireless data is passed to land station.

Claims

1, a kind of portable gas explosion pick-up unit, accepting transfer circuit by portable detection transtation mission circuit and data constitutes, it is characterized in that described portable detection transtation mission circuit adopts the PIC single-chip microcomputer of 16F87X series of 28 pin as host circuit, comprise LED digital display module, Gas Signal input amplification module, the setting key module, register module, alarm output module, wireless sending module, power module, electric level interface the 6th pin of three of LED digital display module LED seven-segment displaies conode after the resistance in series respectively wherein, be divided into again four the tunnel respectively after the resistance in seriess with the I/O mouth the 4th of 16F87XPIC chip, 6,7,22 pin connect, be connected with the primary side of operational amplifier LM324 amplifying circuit after the signal output part resistance in series of the sensor of Gas Signal input amplification module, its out secondary is connected with analog quantity input end the 3rd pin of the A/D conversion of 16F87X pic chip, three 74164 registers of register module adopt serial structure, the output terminal of clock of 74164 registers is connected with current input end of clock the 14th pin of the synchronous serial of 16F87X pic chip, the data input port of 74164 registers is connected with the SPI communication data output terminal of 16F87X PIC single-chip microcomputer, width modulation function end the 13rd pin of 16F87X pic chip is respectively through two the triode driven for emitting lights diodes and the hummer of alarm output module, FPDP the 8th pin of the MIRF002 of wireless sending module is connected with oscillator input end the 12nd pin with asynchronous communication transmitting terminal the 17th pin of 16F87X pic chip by two triodes respectively with control port the 5th pin, and the 3.6V direct current intrinsic safety electric battery of power module boosts to 5V to each module for power supply by the b18505 chip adjustment of BOOST structure; Described data are accepted transfer circuit and are adopted 16873 PIC single-chip microcomputer of 28 pin as host circuit, comprise LED digital display module, wireless receiving input amplification module, register module and power module, wherein after three of LED digital display module LED seven-segment display parallel connections, the I/O mouth the 2nd of each electric level interface difference resistance in series and 16873 pic chips, 3,4,5,6,7,21,22 pin connect, the MIRF002 chip of wireless receiving input amplification module is connected with communication data input end the 18th pin of 16873 pic chips by triode amplifier, the data input port of the register of register module is connected with the SPI communication data output terminal of 16873PIC chip, frequency is by the I/O mouth output of 16873 pic chips, and the 12V direct current intrinsic safety electric battery of power module is adjusted to each module for power supply by 7805 chips.